Specifications
Combine
Automatic Drop Out
Automatic Over Voltage Drop Out
Combine Time Delay
Coil Circuit:
13.6, 27.2 Volts
12.6, 25.2 Volts
15, 30 Volts
Marine Electrical Products
L-Series ACR with Coil Economizer
PN 9112
30 Seconds
Input Voltage:
Power Consumption:
9 - 36 Volts DC
3.8 Amperes@12-36V DC
Holding 12 Volts: 0.13 Amperes@12V DC
0.07 Amperes@24V DC
Features
Inrush, 130ms:
• Automatically combines battery banks during the charging cycle and
isolates under discharge
• Override for emergency engine paralleling to start an engine
• Activates whether the charging source is an alternator or battery charger
• Output for “ON” indication LED
• Integrated coil control minimizes heating and amperage draw
• Hermetically sealed contacts/vaporproof
• Single or double sensing
• Pulse circuit requires very low current draw when contact is closed
• Ignition protected - Safe for installation aboard gasoline powered boats
• Meets SAE J1171 - External ignition protection requirements
• UL Recognized - UL 508 industrial control equipment
Main Power Contacts:
Voltage Rating
Stud Terminal Size
Terminal Stud Torque
Contact Form
Inrush Rating: 250ms (10 repeats)*
Mechanical Life
Make Current@10,000 Cycles:
Break Current@10,000 Cycles:
60 Volts DC
M8 (accepts 5/16” terminals)
80-100 In-lb
SPST-NO
2000 Amperes
1 Million Cycles
2000 Amperes@28V
2000 Amperes@28V
Wire Size
Cranking Rating
Intermittent Rating Continuous Rating
9.75 sec. (10 repeats)*
5 min. (UL 1107)
(UL 1107)
1/0
2/0
450A
500A
800A
375A
250A
450A
300A
Blue Sea Systems Inc.
425 Sequoia Drive
Bellingham, WA 98226 USA
Phone (360) 738-8230
2x2/0
600A
450A
Fax (360) 734-4195
E-mail [email protected]
* Blue Sea Systems Engine Starting Standard
Guarantee
Any Blue Sea Systems product with which a customer is not satisfied may
be returned for a refund or replacement at any time.
6693 Rev.005
Installation Instructions
Mounting
• Select a dry and protected mounting location near the battery banks or the
battery switch.
• Choose a cool, dry, and well-ventilated location if possible. The L-Series ACR
with Coil Economizer may become very warm when operating at full
current-carrying capacity.
• Avoid locations directly above batteries where corrosive fumes may be present.
• Mount the relay securely with #10, #12, or 5mm screws through the flanges at
the base. Hole size is 0.22 inches.
Sense One Battery Bank
• Remove red ring terminal voltage sensing wire from the stud terminal A1or A2
associated with the battery bank that you don’t want to sense.
• Place the removed ring terminal over the stud terminal to which the other
voltage sensing wire is attached, or insulate the ring terminal and fold it out
of the way.
The negative (black wire) connection from the relay to the battery negative must
be as short as possible. Because the built in coil economizer causes current
pulses in the control circuit, there may be noise present on the black wire and it
should not be run with sensitive wires from other circuits.
Electrical Connections
The wiring configuration to the right represents a common installation and is not
meant to be a guide for the wiring of a specific vessel. Consult your marine
electrical professional for the wiring system applicable to your boat.
Disconnect the positive battery connection before beginning the installation. If
there is a possibility of tools causing a short, disconnect the negative terminals
before disconnecting the positive battery terminals.
Make electrical connections based on the wiring diagram to the right. Consult the
Wire Sizing Chart on the following page to determine the appropriate wire size.
If a manual control is installed to use this device for emergency paralleling of
batteries for engine starting, no fusing is required in the main circuit, but wire
sizes should be chosen for the full starting currents. If starting service is not
included, choose circuit protection according to wire capacity. If a charging
source is present and the relay is closed in automatic mode when an engine is
started, starting currents can flow through this circuit. This can result in blowing of
protection fuses if the wiring system does not limit the current.
Voltage Sensing
The 9112 ACR is designed to sense, and operate from, the voltage supplied by
either battery. In a typical application, the engine driven alternator is connected to
the starting battery. When the starting battery is sufficiently charged, the ACR will
close and share charging with the house battery. If a shore charger is supplying
the house battery, when it has brought the house battery up to voltage, the ACR
will close and share with the starting battery.
Typical Configuration - Sense Both Battery Banks
• Connect one battery bank to stud terminal A1
• Connect the other battery bank to stud terminal A2.
• Connect the black line (negative) from the relay to the battery negative
through a 10-15 Amp in-line fuse to prevent fault current from flowing in
this wire.
Caution: Battery cable terminals must be placed at the bottom of the stack
under the sensing wire terminals, the flat washer, the lock washer, and the nut.
Tighten securely. Refer to the Lug Installation Diagram on following page.
• Gray dashed lines indicate optional connections
Wiring Diagram
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